How long can a man survive with prostate cancer?

Well, my father is still alive. He has been fighting prostate cancer for 15+! years. Since about 2 years it has turned into advanced prostate cancer with multiple metastases. He is still fighting. Originally the doctors gave him 8 to 10 years after having removal of the cancerous prostate. I dont think anyone knows exactly. But his good spirits, positive attitude and not giving up enabled him to still live comfortable. He is not able to do some things, like long walks etc., but he is still alive and still fighting.